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d="M16,11H8c-0.6,0-1,0.4-1,1s0.4,1,1,1h8c0.6,0,1-0.4,1-1S16.6,11,16,11z"></path></svg><svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewbox="0 0 24 24" class="icon plus" data-v-6e45c352><path d="M19,2H5C3.3,2,2,3.3,2,5v14c0,1.7,1.3,3,3,3h14c1.7,0,3-1.3,3-3V5C22,3.3,20.7,2,19,2z M20,19c0,0.6-0.4,1-1,1H5c-0.6,0-1-0.4-1-1V5c0-0.6,0.4-1,1-1h14c0.6,0,1,0.4,1,1V19z"></path><path d="M16,11h-3V8c0-0.6-0.4-1-1-1s-1,0.4-1,1v3H8c-0.6,0-1,0.4-1,1s0.4,1,1,1h3v3c0,0.6,0.4,1,1,1s1-0.4,1-1v-3h3c0.6,0,1-0.4,1-1S16.6,11,16,11z"></path></svg></div></div><div class="items" data-v-6e45c352><!--[--><!--[--><a class="VPLink link link" href="/docs/frontend/html/" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>html基础</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/html/%E6%A0%87%E7%AD%BE%E5%AD%A6%E4%B9%A0.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>html标签学习</span><!--]--><!----></a><!----><!--]--><!--]--></div></section></div><div class="group" data-v-a186aa16><section class="VPSidebarGroup collapsible collapsed" data-v-a186aa16 data-v-6e45c352><div class="title" role="button" data-v-6e45c352><h2 class="title-text" data-v-6e45c352>JavaScript教程</h2><div class="action" data-v-6e45c352><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewbox="0 0 24 24" class="icon minus" data-v-6e45c352><path d="M19,2H5C3.3,2,2,3.3,2,5v14c0,1.7,1.3,3,3,3h14c1.7,0,3-1.3,3-3V5C22,3.3,20.7,2,19,2zM20,19c0,0.6-0.4,1-1,1H5c-0.6,0-1-0.4-1-1V5c0-0.6,0.4-1,1-1h14c0.6,0,1,0.4,1,1V19z"></path><path d="M16,11H8c-0.6,0-1,0.4-1,1s0.4,1,1,1h8c0.6,0,1-0.4,1-1S16.6,11,16,11z"></path></svg><svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewbox="0 0 24 24" class="icon plus" data-v-6e45c352><path d="M19,2H5C3.3,2,2,3.3,2,5v14c0,1.7,1.3,3,3,3h14c1.7,0,3-1.3,3-3V5C22,3.3,20.7,2,19,2z M20,19c0,0.6-0.4,1-1,1H5c-0.6,0-1-0.4-1-1V5c0-0.6,0.4-1,1-1h14c0.6,0,1,0.4,1,1V19z"></path><path d="M16,11h-3V8c0-0.6-0.4-1-1-1s-1,0.4-1,1v3H8c-0.6,0-1,0.4-1,1s0.4,1,1,1h3v3c0,0.6,0.4,1,1,1s1-0.4,1-1v-3h3c0.6,0,1-0.4,1-1S16.6,11,16,11z"></path></svg></div></div><div class="items" data-v-6e45c352><!--[--><!--[--><a class="VPLink link link" href="/docs/frontend/js/JavaScript%E7%9A%84%E5%9F%BA%E7%A1%80%E8%AF%AD%E6%B3%95.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>基础语法</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/js/%E5%88%86%E6%94%AF%E7%BB%93%E6%9E%84.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>分支结构</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/js/%E5%BE%AA%E7%8E%AF%E7%BB%93%E6%9E%84.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>循环结构</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/js/%E5%87%BD%E6%95%B0(%E4%B8%8A).html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>函数（上）</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/js/%E5%87%BD%E6%95%B0%EF%BC%88%E4%B8%8B%EF%BC%89.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>函数（下）</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/js/%E6%95%B0%E7%BB%84.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>数组</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/js/%E5%AD%97%E7%AC%A6%E4%B8%B2%E7%9A%84%E6%93%8D%E4%BD%9C.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>字符串的操作</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/js/Math%E5%92%8CDate.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>Math和Date</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/js/BOM%E5%92%8CDOM%EF%BC%88%E4%B8%8A%EF%BC%89.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>BOM和DOM（上）</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/js/DOM%EF%BC%88%E4%B8%8B%EF%BC%89.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>DOM（下）</span><!--]--><!----></a><!----><!--]--><!--]--></div></section></div><div class="group" data-v-a186aa16><section class="VPSidebarGroup collapsible" data-v-a186aa16 data-v-6e45c352><div class="title" role="button" data-v-6e45c352><h2 class="title-text" data-v-6e45c352>千锋线下学习</h2><div class="action" data-v-6e45c352><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewbox="0 0 24 24" class="icon minus" data-v-6e45c352><path d="M19,2H5C3.3,2,2,3.3,2,5v14c0,1.7,1.3,3,3,3h14c1.7,0,3-1.3,3-3V5C22,3.3,20.7,2,19,2zM20,19c0,0.6-0.4,1-1,1H5c-0.6,0-1-0.4-1-1V5c0-0.6,0.4-1,1-1h14c0.6,0,1,0.4,1,1V19z"></path><path d="M16,11H8c-0.6,0-1,0.4-1,1s0.4,1,1,1h8c0.6,0,1-0.4,1-1S16.6,11,16,11z"></path></svg><svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewbox="0 0 24 24" class="icon plus" data-v-6e45c352><path d="M19,2H5C3.3,2,2,3.3,2,5v14c0,1.7,1.3,3,3,3h14c1.7,0,3-1.3,3-3V5C22,3.3,20.7,2,19,2z M20,19c0,0.6-0.4,1-1,1H5c-0.6,0-1-0.4-1-1V5c0-0.6,0.4-1,1-1h14c0.6,0,1,0.4,1,1V19z"></path><path d="M16,11h-3V8c0-0.6-0.4-1-1-1s-1,0.4-1,1v3H8c-0.6,0-1,0.4-1,1s0.4,1,1,1h3v3c0,0.6,0.4,1,1,1s1-0.4,1-1v-3h3c0.6,0,1-0.4,1-1S16.6,11,16,11z"></path></svg></div></div><div class="items" data-v-6e45c352><!--[--><!--[--><a class="VPLink link link" href="/docs/frontend/qf/JS%E8%BF%90%E7%AE%97%E7%AC%A6.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>JS运算符</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/qf/JS%E5%BE%AA%E7%8E%AF%E5%AF%B9%E8%B1%A1.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>JS循环对象</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/qf/JS%E5%87%BD%E6%95%B0.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>JS函数</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/qf/JS%E5%AF%B9%E8%B1%A1.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>JS对象</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/qf/JS%E6%95%B0%E7%BB%84%E9%87%8D%E6%9E%84.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>JS数组重构</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/qf/JS%E6%95%B0%E7%BB%84%E9%87%8D%E6%9E%842.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>JS数组重构2</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link active" href="/docs/frontend/qf/JS%E8%B7%AF%E7%94%B1.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>JS路由</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/qf/JSDOM.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>JSDOM知识</span><!--]--><!----></a><!----><!--]--><!--[--><a class="VPLink link link" href="/docs/frontend/qf/JS%E4%BA%8B%E4%BB%B6.html" style="padding-left:0px;" tabindex="-1" data-v-70e2cdfb data-v-3c355974><!--[--><span class="link-text" data-v-70e2cdfb>JS事件</span><!--]--><!----></a><!----><!--]--><!--]--></div></section></div><!--]--><!--[--><!--]--></nav></aside><div class="VPContent has-sidebar" id="VPContent" data-v-5211c0b1 data-v-296cfad2><div class="VPDoc has-sidebar has-aside" data-v-296cfad2 data-v-cfb513e0><div class="container" data-v-cfb513e0><div class="aside" data-v-cfb513e0><div class="aside-curtain" data-v-cfb513e0></div><div class="aside-container" data-v-cfb513e0><div class="aside-content" data-v-cfb513e0><div class="VPDocAside" data-v-cfb513e0 data-v-afc4c1a1><!--[--><!--]--><!--[--><!--]--><div class="VPDocAsideOutline" data-v-afc4c1a1 data-v-2865c0b0><div class="content" data-v-2865c0b0><div class="outline-marker" data-v-2865c0b0></div><div class="outline-title" data-v-2865c0b0>On this page</div><nav aria-labelledby="doc-outline-aria-label" data-v-2865c0b0><span class="visually-hidden" id="doc-outline-aria-label" data-v-2865c0b0> Table of Contents for current page </span><ul class="root" data-v-2865c0b0 data-v-1188541a><!--[--><!--]--></ul></nav></div></div><!--[--><!--]--><div class="spacer" data-v-afc4c1a1></div><!--[--><!--]--><!----><!--[--><!--]--><!--[--><!--]--></div></div></div></div><div class="content" data-v-cfb513e0><div class="content-container" data-v-cfb513e0><!--[--><!--]--><main class="main" data-v-cfb513e0><div style="position:relative;" class="vp-doc _docs_frontend_qf_JS%E8%B7%AF%E7%94%B1" data-v-cfb513e0><div><h3 id="日期" tabindex="-1">日期 <a class="header-anchor" href="#日期" aria-hidden="true">#</a></h3><ul><li>date.now():时间戳 当前时间距离格里尼治时间1970 1.1 0:0</li><li>new Date(字符串|日期对象|毫秒数) 如果没有任何参数时,就是当前时间</li><li>date.getFullYear():获取当前年</li><li>date.getMonth():获取月份 0-11</li><li>date.getDate():获取当前日期</li><li>date.getDay():获取星期 0-6</li><li>date.getHours():获取小时</li><li>date.getMinutes():获取分钟</li><li>date.getSeconds():获取秒</li><li>date.getMilliseconds():获取当前毫秒</li></ul><blockquote><p>设置的值如果超过最大值就会进位</p></blockquote><ul><li>getUTCFullYear():获取格林尼治时间</li><li>setUTCFullYear():设置格林尼治时间</li><li>getTime():时间戳</li></ul><h3 id="number" tabindex="-1">number <a class="header-anchor" href="#number" aria-hidden="true">#</a></h3><ul><li>isFinite:判断有限还是无穷大</li><li>isInteger:判断是不是整数</li><li>isSafeInteger:判断是否超出边界的整数</li><li>isNaN:判断是否是非数值</li></ul><div class="language-js line-numbers-mode"><button title="Copy Code" class="copy"></button><span class="lang">js</span><pre class="shiki material-palenight"><code><span class="line"><span style="color:#676E95;font-style:italic;">// 传递的值是否为 NaN，并且检查其类型是否为 Number</span></span>
<span class="line"><span style="color:#A6ACCD;">console</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">log</span><span style="color:#A6ACCD;">(Number</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">isNaN</span><span style="color:#A6ACCD;">(</span><span style="color:#89DDFF;">&#39;</span><span style="color:#C3E88D;">qf</span><span style="color:#89DDFF;">&#39;</span><span style="color:#A6ACCD;">))</span><span style="color:#89DDFF;">;</span><span style="color:#A6ACCD;">    </span><span style="color:#676E95;font-style:italic;">// false</span></span>
<span class="line"><span style="color:#A6ACCD;">console</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">log</span><span style="color:#A6ACCD;">(Number</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">isNaN</span><span style="color:#A6ACCD;">(</span><span style="color:#89DDFF;">&#39;</span><span style="color:#C3E88D;">31414</span><span style="color:#89DDFF;">&#39;</span><span style="color:#A6ACCD;">))</span><span style="color:#89DDFF;">;</span><span style="color:#A6ACCD;">    </span><span style="color:#676E95;font-style:italic;">// false</span></span>
<span class="line"><span style="color:#A6ACCD;">console</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">log</span><span style="color:#A6ACCD;">(Number</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">isNaN</span><span style="color:#A6ACCD;">(</span><span style="color:#89DDFF;">NaN</span><span style="color:#A6ACCD;">))</span><span style="color:#89DDFF;">;</span><span style="color:#A6ACCD;">    </span><span style="color:#676E95;font-style:italic;">// true</span></span>
<span class="line"></span></code></pre><div class="line-numbers-wrapper" aria-hidden="true"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><blockquote><!----><ul><li>isNaN() 函数 <ul><li>用于检查其参数是否是非数字值。</li><li>如果参数值为 NaN 或字符串、对象、undefined等非数字值则返回 true, 否则返回 false。</li></ul></li><li>Number.isNaN() 函数 <ul><li>用于判断传递的值是否为 NaN，<code>并且</code>检查其类型是否为 Number，如果值为 NaN 且类型为 Number，则返回 true，否则返回 false。</li></ul></li></ul></blockquote><h4 id="掌握秒表案例" tabindex="-1">掌握秒表案例 <a class="header-anchor" href="#掌握秒表案例" aria-hidden="true">#</a></h4><h4 id="掌握日历案例" tabindex="-1">掌握日历案例 <a class="header-anchor" href="#掌握日历案例" aria-hidden="true">#</a></h4><h3 id="bom" tabindex="-1">BOM <a class="header-anchor" href="#bom" aria-hidden="true">#</a></h3><h4 id="bom的认识" tabindex="-1">BOM的认识 <a class="header-anchor" href="#bom的认识" aria-hidden="true">#</a></h4><ul><li><p>BOM (Browser Object Model) window</p></li><li><p>所有BOM、DOM都可以给上面添加属性和方法</p></li><li><p>BOM包含DOM</p></li></ul><h4 id="bom包含的元素" tabindex="-1">BOM包含的元素 <a class="header-anchor" href="#bom包含的元素" aria-hidden="true">#</a></h4><ul><li>document DOM的根节点</li><li>location</li><li>history</li><li>screen</li><li>navigator</li></ul><h4 id="window根节点" tabindex="-1">window根节点 <a class="header-anchor" href="#window根节点" aria-hidden="true">#</a></h4><ul><li><p>open(&quot;<a href="http://163.com" target="_blank" rel="noreferrer">http://163.com</a>&quot;) <code>主要作用就是传参</code></p></li><li><p>_black 和 _self black表示新页面,self表示当前页面</p></li><li><p>innerWidth 和 innerHeight 可视区域的宽高</p></li><li><p>outerWidth 和 outerHeight 窗口的宽高(浏览器)</p></li><li><p>screenX 和 screenY 窗口的在屏幕上的坐标</p></li><li><p>onpopstate: 当历史状态发生改变的时候</p></li></ul><div class="language-js line-numbers-mode"><button title="Copy Code" class="copy"></button><span class="lang">js</span><pre class="shiki material-palenight"><code><span class="line"><span style="color:#676E95;font-style:italic;">// hash跳转页面存储数据</span></span>
<span class="line"><span style="color:#89DDFF;">&lt;</span><span style="color:#F07178;">input</span><span style="color:#89DDFF;"> </span><span style="color:#C792EA;">type</span><span style="color:#89DDFF;">=</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">text</span><span style="color:#89DDFF;">&quot;</span><span style="color:#89DDFF;"> </span><span style="color:#C792EA;">id</span><span style="color:#89DDFF;">=</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">inp</span><span style="color:#89DDFF;">&quot;</span><span style="color:#89DDFF;">&gt;</span></span>
<span class="line"><span style="color:#89DDFF;">&lt;</span><span style="color:#F07178;">a</span><span style="color:#89DDFF;"> </span><span style="color:#C792EA;">href</span><span style="color:#89DDFF;">=</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">#</span><span style="color:#89DDFF;">&quot;</span><span style="color:#89DDFF;"> </span><span style="color:#C792EA;">id</span><span style="color:#89DDFF;">=</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">a</span><span style="color:#89DDFF;">&quot;</span><span style="color:#89DDFF;">&gt;</span><span style="color:#A6ACCD;">超链接</span><span style="color:#89DDFF;">&lt;/</span><span style="color:#F07178;">a</span><span style="color:#89DDFF;">&gt;</span></span>
<span class="line"></span>
<span class="line"><span style="color:#A6ACCD;">var inp = document.getElementById(&#39;inp&#39;)</span></span>
<span class="line"><span style="color:#A6ACCD;">var a = document.getElementById(&#39;a&#39;)</span></span>
<span class="line"><span style="color:#A6ACCD;">a.onclick = function () </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#A6ACCD;">    </span><span style="color:#82AAFF;">open</span><span style="color:#A6ACCD;">(</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">./a.html?msg=</span><span style="color:#89DDFF;">&quot;</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">+</span><span style="color:#A6ACCD;"> inp</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">value)</span></span>
<span class="line"><span style="color:#89DDFF;">}</span></span>
<span class="line"></span></code></pre><div class="line-numbers-wrapper" aria-hidden="true"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br></div></div><h4 id="localhost" tabindex="-1">localhost <a class="header-anchor" href="#localhost" aria-hidden="true">#</a></h4><ul><li>hash 锚点# <ul><li><ol><li>锚点标记</li><li>历史记录</li><li>路由的根源</li></ol></li></ul></li><li>search ?name=...... 跳转页面或者通过get方式发送服务器请求</li></ul><blockquote><p><strong>hash必须写在search的后面</strong></p></blockquote><ul><li>SPA 单页面运用模式 <ul><li>无法做搜索引擎的优化</li></ul></li><li>SSR 多页面渲染</li></ul><h4 id="uri编码格式" tabindex="-1">URI编码格式 <a class="header-anchor" href="#uri编码格式" aria-hidden="true">#</a></h4><ul><li>decodeURIComponent 解析URI编码格式</li></ul><div class="language-js line-numbers-mode"><button title="Copy Code" class="copy"></button><span class="lang">js</span><pre class="shiki material-palenight"><code><span class="line"><span style="color:#A6ACCD;">console</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">log</span><span style="color:#A6ACCD;">(</span><span style="color:#82AAFF;">decodeURIComponent</span><span style="color:#A6ACCD;">(</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">%E4%BD%A0%E5%A5%BD</span><span style="color:#89DDFF;">&quot;</span><span style="color:#A6ACCD;">))</span></span>
<span class="line"><span style="color:#89DDFF;">	</span><span style="color:#676E95;font-style:italic;">// 你好</span></span>
<span class="line"></span></code></pre><div class="line-numbers-wrapper" aria-hidden="true"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div><ul><li>encodeURIComponent 将字符串转换为URI编码格式</li></ul><div class="language-js line-numbers-mode"><button title="Copy Code" class="copy"></button><span class="lang">js</span><pre class="shiki material-palenight"><code><span class="line"><span style="color:#A6ACCD;">console</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">log</span><span style="color:#A6ACCD;">(</span><span style="color:#82AAFF;">encodeURIComponent</span><span style="color:#A6ACCD;">(</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">你好</span><span style="color:#89DDFF;">&quot;</span><span style="color:#A6ACCD;">))</span><span style="color:#89DDFF;">;</span><span style="color:#A6ACCD;">	</span></span>
<span class="line"><span style="color:#89DDFF;">	</span><span style="color:#676E95;font-style:italic;">// %E4%BD%A0%E5%A5%BD</span></span>
<span class="line"></span></code></pre><div class="line-numbers-wrapper" aria-hidden="true"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div><h4 id="浏览器模式" tabindex="-1">浏览器模式 <a class="header-anchor" href="#浏览器模式" aria-hidden="true">#</a></h4><h5 id="只读模式" tabindex="-1">只读模式 <a class="header-anchor" href="#只读模式" aria-hidden="true">#</a></h5><div class="language-js line-numbers-mode"><button title="Copy Code" class="copy"></button><span class="lang">js</span><pre class="shiki material-palenight"><code><span class="line"><span style="color:#A6ACCD;">console</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">log</span><span style="color:#A6ACCD;">(location</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">host)</span><span style="color:#89DDFF;">;</span><span style="color:#A6ACCD;">     </span><span style="color:#676E95;font-style:italic;">// 127.0.0.1:5500  主机</span></span>
<span class="line"><span style="color:#A6ACCD;">console</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">log</span><span style="color:#A6ACCD;">(location</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">hostname)</span><span style="color:#89DDFF;">;</span><span style="color:#A6ACCD;"> </span><span style="color:#676E95;font-style:italic;">// 127.0.0.1  主机名</span></span>
<span class="line"><span style="color:#A6ACCD;">console</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">log</span><span style="color:#A6ACCD;">(location</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">origin)</span><span style="color:#89DDFF;">;</span><span style="color:#A6ACCD;">   											</span><span style="color:#676E95;font-style:italic;">// http://127.0.0.1:5500  源</span></span>
<span class="line"><span style="color:#A6ACCD;">console</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">log</span><span style="color:#A6ACCD;">(location</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">pathname)</span><span style="color:#89DDFF;">;</span><span style="color:#A6ACCD;"> </span><span style="color:#676E95;font-style:italic;">// /2%E3%80%81BOM.html  路径名称</span></span>
<span class="line"><span style="color:#A6ACCD;">console</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">log</span><span style="color:#A6ACCD;">(location</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">protocol)</span><span style="color:#89DDFF;">;</span><span style="color:#A6ACCD;"> </span><span style="color:#676E95;font-style:italic;">// http:  协议</span></span>
<span class="line"><span style="color:#A6ACCD;">console</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">log</span><span style="color:#A6ACCD;">(location</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">port)</span><span style="color:#89DDFF;">;</span><span style="color:#A6ACCD;">     </span><span style="color:#676E95;font-style:italic;">// 5500  端口</span></span>
<span class="line"></span></code></pre><div class="line-numbers-wrapper" aria-hidden="true"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br></div></div><h5 id="可读可写" tabindex="-1">可读可写 <a class="header-anchor" href="#可读可写" aria-hidden="true">#</a></h5><div class="language-js line-numbers-mode"><button title="Copy Code" class="copy"></button><span class="lang">js</span><pre class="shiki material-palenight"><code><span class="line"><span style="color:#A6ACCD;">console</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">log</span><span style="color:#A6ACCD;">(location</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">href)</span><span style="color:#89DDFF;">;</span><span style="color:#A6ACCD;">								</span><span style="color:#676E95;font-style:italic;">// http://127.0.0.1:5500/2%E3%80%81BOM.html#</span></span>
<span class="line"></span></code></pre><div class="line-numbers-wrapper" aria-hidden="true"><span class="line-number">1</span><br></div></div><h4 id="history" tabindex="-1">history <a class="header-anchor" href="#history" aria-hidden="true">#</a></h4><ul><li><p>history.length 有多少个历史记录</p></li><li><p>history.back 往后退,相当于后退按钮</p></li><li><p>history.forward 向前进</p></li><li><p>history.go(0) 刷新</p></li><li><p>history.go(-1) 后退1个</p></li><li><p>history.go(1) 前进1个</p></li><li><p>history.pushState() 添加历史状态</p></li><li><p>history.replaceState() 替换当前的历史状态</p></li><li><p>history.state() 当前历史状态</p></li></ul><h4 id="screen" tabindex="-1">screen <a class="header-anchor" href="#screen" aria-hidden="true">#</a></h4><ul><li>screen.width/height 屏幕的宽高,跟浏览器的窗口大小无关</li><li>screen.avaiWidth/height 屏幕去掉任务栏的宽高,根据任务栏的位置决定</li></ul><h4 id="navigator" tabindex="-1">navigator <a class="header-anchor" href="#navigator" aria-hidden="true">#</a></h4><ul><li>navigator.slipboard 剪切板</li><li>navigator.cookieEnable 是否开启cookie</li><li>navigator.onLine 是否在线</li><li>navigator.userAgent 浏览器的信息</li><li>navigator.platform 平台</li></ul><div class="language-js line-numbers-mode"><button title="Copy Code" class="copy"></button><span class="lang">js</span><pre class="shiki material-palenight"><code><span class="line"><span style="color:#676E95;font-style:italic;">// 获取当前ip的位置</span></span>
<span class="line"><span style="color:#A6ACCD;">navigator</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">geolocation</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">getCurrentPositio</span><span style="color:#A6ACCD;">(</span><span style="color:#C792EA;">function</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">(</span><span style="color:#A6ACCD;font-style:italic;">pos</span><span style="color:#89DDFF;">)</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#F07178;">    </span><span style="color:#A6ACCD;">console</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">log</span><span style="color:#F07178;">(</span><span style="color:#A6ACCD;">pos</span><span style="color:#F07178;">)</span></span>
<span class="line"><span style="color:#89DDFF;">},</span><span style="color:#A6ACCD;"> </span><span style="color:#C792EA;">function</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">(</span><span style="color:#A6ACCD;font-style:italic;">err</span><span style="color:#89DDFF;">)</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#F07178;">    </span><span style="color:#A6ACCD;">console</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">log</span><span style="color:#F07178;">(</span><span style="color:#A6ACCD;">err</span><span style="color:#89DDFF;">,</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">----</span><span style="color:#89DDFF;">&quot;</span><span style="color:#F07178;">)</span></span>
<span class="line"><span style="color:#89DDFF;">}</span><span style="color:#A6ACCD;">)</span></span>
<span class="line"></span></code></pre><div class="line-numbers-wrapper" aria-hidden="true"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br></div></div><h4 id="埋点" tabindex="-1">埋点 <a class="header-anchor" href="#埋点" aria-hidden="true">#</a></h4><ul><li>统计项目中使用的卖点,收集信息,设置粘性需求.</li></ul><h3 id="百度地图api" tabindex="-1">百度地图API <a class="header-anchor" href="#百度地图api" aria-hidden="true">#</a></h3><h3 id="hash路由" tabindex="-1">hash路由 <a class="header-anchor" href="#hash路由" aria-hidden="true">#</a></h3><ul><li>当历史记录会激活hash</li><li>当改变属性会激活hash</li></ul><div class="language-js line-numbers-mode"><button title="Copy Code" class="copy"></button><span class="lang">js</span><pre class="shiki material-palenight"><code><span class="line"><span style="color:#676E95;font-style:italic;">// 初始化函数</span></span>
<span class="line"><span style="color:#A6ACCD;">        </span><span style="color:#82AAFF;">init</span><span style="color:#A6ACCD;">()</span></span>
<span class="line"><span style="color:#89DDFF;">        </span><span style="color:#676E95;font-style:italic;">// 初始化函数 判断hash值是否存在</span></span>
<span class="line"><span style="color:#A6ACCD;">        </span><span style="color:#C792EA;">function</span><span style="color:#A6ACCD;"> </span><span style="color:#82AAFF;">init</span><span style="color:#89DDFF;">()</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 窗口加载的时候进行监听hash是否发生变化,并且调用指定函数</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#A6ACCD;">window</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">onhashchange</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">=</span><span style="color:#F07178;"> </span><span style="color:#A6ACCD;">HashChangeHandler</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 判断第一个数值是否为默认值,这个功能只要针对于运行浏览器进行切换后,在刷新页面,防止出现刷新却选中的是第一个</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#89DDFF;font-style:italic;">if</span><span style="color:#F07178;"> (</span><span style="color:#89DDFF;">!</span><span style="color:#A6ACCD;">location</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">href</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">includes</span><span style="color:#F07178;">(</span><span style="color:#89DDFF;">&#39;</span><span style="color:#C3E88D;">#</span><span style="color:#89DDFF;">&#39;</span><span style="color:#F07178;">)) </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#89DDFF;">                </span><span style="color:#676E95;font-style:italic;">// 如果没有选中,则添加第一个属性</span></span>
<span class="line"><span style="color:#F07178;">                </span><span style="color:#A6ACCD;">location</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">href</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">+=</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">&#39;</span><span style="color:#C3E88D;">#vegetable</span><span style="color:#89DDFF;">&#39;</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#89DDFF;">}</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;font-style:italic;">else</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#89DDFF;">                </span><span style="color:#676E95;font-style:italic;">// 执行hash加载函数</span></span>
<span class="line"><span style="color:#F07178;">                </span><span style="color:#82AAFF;">HashChangeHandler</span><span style="color:#F07178;">()</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#89DDFF;">}</span></span>
<span class="line"><span style="color:#F07178;">        </span><span style="color:#89DDFF;">}</span></span>
<span class="line"></span>
<span class="line"><span style="color:#89DDFF;">        </span><span style="color:#676E95;font-style:italic;">// 执行hash函数:主要作用就是或者div</span></span>
<span class="line"><span style="color:#A6ACCD;">        </span><span style="color:#C792EA;">function</span><span style="color:#A6ACCD;"> </span><span style="color:#82AAFF;">HashChangeHandler</span><span style="color:#89DDFF;">()</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 执行清除函数</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#82AAFF;">clearActived</span><span style="color:#F07178;">(</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">show</span><span style="color:#89DDFF;">&quot;</span><span style="color:#F07178;">)</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 通过hash值获取内容中的div,再把前面的#给他截取掉,这样我们就获取到了div</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#C792EA;">var</span><span style="color:#F07178;"> </span><span style="color:#A6ACCD;">div</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">=</span><span style="color:#F07178;"> </span><span style="color:#A6ACCD;">document</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">getElementById</span><span style="color:#F07178;">(</span><span style="color:#A6ACCD;">location</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">hash</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">slice</span><span style="color:#F07178;">(</span><span style="color:#F78C6C;">1</span><span style="color:#F07178;">))</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 给对应的div添加类型</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#A6ACCD;">div</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">className</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">=</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">show</span><span style="color:#89DDFF;">&quot;</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 执行列表函数</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#82AAFF;">changeNav</span><span style="color:#F07178;">()</span></span>
<span class="line"><span style="color:#F07178;">        </span><span style="color:#89DDFF;">}</span></span>
<span class="line"><span style="color:#89DDFF;">        </span><span style="color:#676E95;font-style:italic;">// 执行列表函数</span></span>
<span class="line"><span style="color:#A6ACCD;">        </span><span style="color:#C792EA;">function</span><span style="color:#A6ACCD;"> </span><span style="color:#82AAFF;">changeNav</span><span style="color:#89DDFF;">()</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 执行清除函数</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#82AAFF;">clearActived</span><span style="color:#F07178;">(</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">actived</span><span style="color:#89DDFF;">&quot;</span><span style="color:#F07178;">)</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 通过或者所有的a标签,在转换为数组</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#C792EA;">var</span><span style="color:#F07178;"> </span><span style="color:#A6ACCD;">alist</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">=</span><span style="color:#F07178;"> </span><span style="color:#A6ACCD;">Array</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">from</span><span style="color:#F07178;">(</span><span style="color:#A6ACCD;">document</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">getElementsByTagName</span><span style="color:#F07178;">(</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">a</span><span style="color:#89DDFF;">&quot;</span><span style="color:#F07178;">))</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 通过find进行过查找,所对应的标题,是否存在hash值,并且返回</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#C792EA;">var</span><span style="color:#F07178;"> </span><span style="color:#A6ACCD;">a</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">=</span><span style="color:#F07178;"> </span><span style="color:#A6ACCD;">alist</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">find</span><span style="color:#F07178;">(</span><span style="color:#C792EA;">function</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">(</span><span style="color:#A6ACCD;font-style:italic;">item</span><span style="color:#89DDFF;">)</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#F07178;">                </span><span style="color:#89DDFF;font-style:italic;">return</span><span style="color:#F07178;"> </span><span style="color:#A6ACCD;">item</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">href</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">includes</span><span style="color:#F07178;">(</span><span style="color:#A6ACCD;">location</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">hash</span><span style="color:#F07178;">)</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#89DDFF;">}</span><span style="color:#F07178;">)</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 并且给标题添加所类名</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#A6ACCD;">a</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">className</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">=</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">actived</span><span style="color:#89DDFF;">&quot;</span></span>
<span class="line"><span style="color:#F07178;">        </span><span style="color:#89DDFF;">}</span></span>
<span class="line"></span>
<span class="line"><span style="color:#89DDFF;">        </span><span style="color:#676E95;font-style:italic;">// 执行清除函数</span></span>
<span class="line"><span style="color:#A6ACCD;">        </span><span style="color:#C792EA;">function</span><span style="color:#A6ACCD;"> </span><span style="color:#82AAFF;">clearActived</span><span style="color:#89DDFF;">(</span><span style="color:#A6ACCD;font-style:italic;">className</span><span style="color:#89DDFF;">)</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 通过传参获取到所对应的类名</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#C792EA;">var</span><span style="color:#F07178;"> </span><span style="color:#A6ACCD;">elems</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">=</span><span style="color:#F07178;"> </span><span style="color:#A6ACCD;">document</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">getElementsByClassName</span><span style="color:#F07178;">(</span><span style="color:#A6ACCD;">className</span><span style="color:#F07178;">)</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 如果相同的类名个数存在多个,那么就清除多余的类名</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#89DDFF;font-style:italic;">if</span><span style="color:#F07178;"> (</span><span style="color:#A6ACCD;">elems</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">length</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">&gt;</span><span style="color:#F07178;"> </span><span style="color:#F78C6C;">0</span><span style="color:#F07178;">) </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#F07178;">                </span><span style="color:#A6ACCD;">elems</span><span style="color:#F07178;">[</span><span style="color:#F78C6C;">0</span><span style="color:#F07178;">]</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">className</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">=</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">&quot;&quot;</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#89DDFF;">}</span></span>
<span class="line"><span style="color:#F07178;">        </span><span style="color:#89DDFF;">}</span></span>
<span class="line"></span></code></pre><div class="line-numbers-wrapper" aria-hidden="true"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br><span class="line-number">25</span><br><span class="line-number">26</span><br><span class="line-number">27</span><br><span class="line-number">28</span><br><span class="line-number">29</span><br><span class="line-number">30</span><br><span class="line-number">31</span><br><span class="line-number">32</span><br><span class="line-number">33</span><br><span class="line-number">34</span><br><span class="line-number">35</span><br><span class="line-number">36</span><br><span class="line-number">37</span><br><span class="line-number">38</span><br><span class="line-number">39</span><br><span class="line-number">40</span><br><span class="line-number">41</span><br><span class="line-number">42</span><br><span class="line-number">43</span><br><span class="line-number">44</span><br><span class="line-number">45</span><br><span class="line-number">46</span><br><span class="line-number">47</span><br><span class="line-number">48</span><br><span class="line-number">49</span><br><span class="line-number">50</span><br></div></div><h3 id="history路由" tabindex="-1">history路由 <a class="header-anchor" href="#history路由" aria-hidden="true">#</a></h3><ul><li><p>pushstate:给历史列表中添加历史记录,其中包括<code>数据</code>,<code>无用的标识</code>,<code>地址</code> . <strong>不允许存储DOM元素</strong></p></li><li><p>state:就是存储的第一个数据</p></li><li><p>replaceState:替换历史状态</p></li></ul><div class="language-js line-numbers-mode"><button title="Copy Code" class="copy"></button><span class="lang">js</span><pre class="shiki material-palenight"><code><span class="line"><span style="color:#C792EA;">var</span><span style="color:#A6ACCD;"> list </span><span style="color:#89DDFF;">=</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#A6ACCD;">            </span><span style="color:#F07178;">vegetable</span><span style="color:#89DDFF;">:</span><span style="color:#A6ACCD;"> [</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">黄瓜</span><span style="color:#89DDFF;">&quot;</span><span style="color:#89DDFF;">,</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">西红柿</span><span style="color:#89DDFF;">&quot;</span><span style="color:#A6ACCD;">]</span><span style="color:#89DDFF;">,</span></span>
<span class="line"><span style="color:#A6ACCD;">            </span><span style="color:#F07178;">fruits</span><span style="color:#89DDFF;">:</span><span style="color:#A6ACCD;"> [</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">香蕉</span><span style="color:#89DDFF;">&quot;</span><span style="color:#89DDFF;">,</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">菠萝</span><span style="color:#89DDFF;">&quot;</span><span style="color:#A6ACCD;">]</span><span style="color:#89DDFF;">,</span></span>
<span class="line"><span style="color:#A6ACCD;">            </span><span style="color:#F07178;">oil</span><span style="color:#89DDFF;">:</span><span style="color:#A6ACCD;"> [</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">花生油</span><span style="color:#89DDFF;">&quot;</span><span style="color:#89DDFF;">,</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">大豆</span><span style="color:#89DDFF;">&quot;</span><span style="color:#A6ACCD;">]</span><span style="color:#89DDFF;">,</span></span>
<span class="line"><span style="color:#A6ACCD;">            </span><span style="color:#F07178;">meat</span><span style="color:#89DDFF;">:</span><span style="color:#A6ACCD;"> [</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">羊肉</span><span style="color:#89DDFF;">&quot;</span><span style="color:#89DDFF;">,</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">牛肉</span><span style="color:#89DDFF;">&quot;</span><span style="color:#A6ACCD;">]</span><span style="color:#89DDFF;">,</span></span>
<span class="line"><span style="color:#A6ACCD;">        </span><span style="color:#89DDFF;">}</span></span>
<span class="line"></span>
<span class="line"><span style="color:#89DDFF;">        </span><span style="color:#676E95;font-style:italic;">// 初始化变量</span></span>
<span class="line"><span style="color:#A6ACCD;">        </span><span style="color:#C792EA;">var</span><span style="color:#A6ACCD;"> lis</span><span style="color:#89DDFF;">,</span><span style="color:#A6ACCD;"> div</span><span style="color:#89DDFF;">,</span><span style="color:#A6ACCD;"> prev</span><span style="color:#89DDFF;">;</span></span>
<span class="line"><span style="color:#89DDFF;">        </span><span style="color:#676E95;font-style:italic;">// 初始化</span></span>
<span class="line"><span style="color:#A6ACCD;">        </span><span style="color:#82AAFF;">init</span><span style="color:#A6ACCD;">()</span><span style="color:#89DDFF;">;</span></span>
<span class="line"><span style="color:#A6ACCD;">        </span><span style="color:#C792EA;">function</span><span style="color:#A6ACCD;"> </span><span style="color:#82AAFF;">init</span><span style="color:#89DDFF;">()</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 当历史状态发生改变时</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#A6ACCD;">window</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">onpopstate</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">=</span><span style="color:#F07178;"> </span><span style="color:#A6ACCD;">popstateHandler</span><span style="color:#89DDFF;">;</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 获取到所有的li元素</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#A6ACCD;">lis</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">=</span><span style="color:#F07178;"> </span><span style="color:#A6ACCD;">Array</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">from</span><span style="color:#F07178;">(</span><span style="color:#A6ACCD;">document</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">getElementsByTagName</span><span style="color:#F07178;">(</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">li</span><span style="color:#89DDFF;">&quot;</span><span style="color:#F07178;">))</span><span style="color:#89DDFF;">;</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 获取所有的div</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#A6ACCD;">div</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">=</span><span style="color:#F07178;"> </span><span style="color:#A6ACCD;">document</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">getElementById</span><span style="color:#F07178;">(</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">app</span><span style="color:#89DDFF;">&quot;</span><span style="color:#F07178;">)</span><span style="color:#89DDFF;">;</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 遍历li,并触发单机时间</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#A6ACCD;">lis</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">forEach</span><span style="color:#F07178;">(</span><span style="color:#C792EA;">function</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">(</span><span style="color:#A6ACCD;font-style:italic;">li</span><span style="color:#89DDFF;">)</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#F07178;">                </span><span style="color:#A6ACCD;">li</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">onclick</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">=</span><span style="color:#F07178;"> </span><span style="color:#A6ACCD;">clickHandler</span><span style="color:#89DDFF;">;</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#89DDFF;">}</span><span style="color:#F07178;">)</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 判断当前状态不存在</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#89DDFF;font-style:italic;">if</span><span style="color:#F07178;"> (</span><span style="color:#89DDFF;">!</span><span style="color:#A6ACCD;">history</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">state</span><span style="color:#F07178;">) </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#89DDFF;">                </span><span style="color:#676E95;font-style:italic;">// 替换当前的历史状态</span></span>
<span class="line"><span style="color:#F07178;">                </span><span style="color:#A6ACCD;">history</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">replaceState</span><span style="color:#F07178;">(</span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">vegetable</span><span style="color:#89DDFF;">&quot;</span><span style="color:#89DDFF;">,</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">vegetable</span><span style="color:#89DDFF;">&quot;</span><span style="color:#F07178;">)</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#89DDFF;">}</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 激活回退前进按钮</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#82AAFF;">popstateHandler</span><span style="color:#F07178;">()</span><span style="color:#89DDFF;">;</span></span>
<span class="line"><span style="color:#F07178;">        </span><span style="color:#89DDFF;">}</span></span>
<span class="line"></span>
<span class="line"><span style="color:#89DDFF;">        </span><span style="color:#676E95;font-style:italic;">// 当点击回退按钮或者前进按钮时激活这个方法</span></span>
<span class="line"><span style="color:#A6ACCD;">        </span><span style="color:#C792EA;">function</span><span style="color:#A6ACCD;"> </span><span style="color:#82AAFF;">popstateHandler</span><span style="color:#89DDFF;">()</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 写入历史状态</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#82AAFF;">setAppContent</span><span style="color:#F07178;">(</span><span style="color:#A6ACCD;">history</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">state</span><span style="color:#F07178;">)</span><span style="color:#89DDFF;">;</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 激活窗口加载</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#82AAFF;">changePrev</span><span style="color:#F07178;">(</span><span style="color:#A6ACCD;">history</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">state</span><span style="color:#F07178;">)</span><span style="color:#89DDFF;">;</span></span>
<span class="line"><span style="color:#F07178;">        </span><span style="color:#89DDFF;">}</span></span>
<span class="line"></span>
<span class="line"><span style="color:#A6ACCD;">        </span><span style="color:#C792EA;">function</span><span style="color:#A6ACCD;"> </span><span style="color:#82AAFF;">clickHandler</span><span style="color:#89DDFF;">()</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 向历史记录中添加一个历史数据，这样会产生一个历史记录</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// history.pushState(数据,无用的标识,地址)</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// history.pushState(this.id,this.id,&quot;?a=1#aa&quot;)</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// pushState不能存储DOM元素</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 添加历史状态</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#A6ACCD;">history</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">pushState</span><span style="color:#F07178;">(</span><span style="color:#89DDFF;">this.</span><span style="color:#A6ACCD;">id</span><span style="color:#89DDFF;">,</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">this.</span><span style="color:#A6ACCD;">id</span><span style="color:#89DDFF;">,</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">&quot;&quot;</span><span style="color:#F07178;">)</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#82AAFF;">setAppContent</span><span style="color:#F07178;">(</span><span style="color:#89DDFF;">this.</span><span style="color:#A6ACCD;">id</span><span style="color:#F07178;">)</span><span style="color:#89DDFF;">;</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#82AAFF;">changePrev</span><span style="color:#F07178;">(</span><span style="color:#89DDFF;">this.</span><span style="color:#A6ACCD;">id</span><span style="color:#F07178;">)</span><span style="color:#89DDFF;">;</span></span>
<span class="line"><span style="color:#F07178;">        </span><span style="color:#89DDFF;">}</span></span>
<span class="line"><span style="color:#89DDFF;">        </span><span style="color:#676E95;font-style:italic;">// 写入历史状态</span></span>
<span class="line"><span style="color:#A6ACCD;">        </span><span style="color:#C792EA;">function</span><span style="color:#A6ACCD;"> </span><span style="color:#82AAFF;">setAppContent</span><span style="color:#89DDFF;">(</span><span style="color:#A6ACCD;font-style:italic;">id</span><span style="color:#89DDFF;">)</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 渲染div</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#A6ACCD;">div</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">innerHTML</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">=</span><span style="color:#F07178;"> </span><span style="color:#A6ACCD;">list</span><span style="color:#F07178;">[</span><span style="color:#A6ACCD;">id</span><span style="color:#F07178;">]</span><span style="color:#89DDFF;">;</span></span>
<span class="line"><span style="color:#F07178;">        </span><span style="color:#89DDFF;">}</span></span>
<span class="line"><span style="color:#89DDFF;">        </span><span style="color:#676E95;font-style:italic;">// 窗口加载</span></span>
<span class="line"><span style="color:#A6ACCD;">        </span><span style="color:#C792EA;">function</span><span style="color:#A6ACCD;"> </span><span style="color:#82AAFF;">changePrev</span><span style="color:#89DDFF;">(</span><span style="color:#A6ACCD;font-style:italic;">id</span><span style="color:#89DDFF;">)</span><span style="color:#A6ACCD;"> </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 如果存在,将改变背景颜色</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#89DDFF;font-style:italic;">if</span><span style="color:#F07178;"> (</span><span style="color:#A6ACCD;">prev</span><span style="color:#F07178;">) </span><span style="color:#89DDFF;">{</span></span>
<span class="line"><span style="color:#F07178;">                </span><span style="color:#A6ACCD;">prev</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">style</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">backgroundColor</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">=</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">rgba(255,255,255,1)</span><span style="color:#89DDFF;">&quot;</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#89DDFF;">}</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 获取到id给prev</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#A6ACCD;">prev</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">=</span><span style="color:#F07178;"> </span><span style="color:#A6ACCD;">document</span><span style="color:#89DDFF;">.</span><span style="color:#82AAFF;">getElementById</span><span style="color:#F07178;">(</span><span style="color:#A6ACCD;">id</span><span style="color:#F07178;">)</span><span style="color:#89DDFF;">;</span></span>
<span class="line"><span style="color:#89DDFF;">            </span><span style="color:#676E95;font-style:italic;">// 改变对应的背景颜色</span></span>
<span class="line"><span style="color:#F07178;">            </span><span style="color:#A6ACCD;">prev</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">style</span><span style="color:#89DDFF;">.</span><span style="color:#A6ACCD;">backgroundColor</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">=</span><span style="color:#F07178;"> </span><span style="color:#89DDFF;">&quot;</span><span style="color:#C3E88D;">deepskyblue</span><span style="color:#89DDFF;">&quot;</span><span style="color:#89DDFF;">;</span></span>
<span class="line"><span style="color:#F07178;">        </span><span style="color:#89DDFF;">}</span></span>
<span class="line"></span></code></pre><div class="line-numbers-wrapper" aria-hidden="true"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br><span class="line-number">25</span><br><span class="line-number">26</span><br><span class="line-number">27</span><br><span class="line-number">28</span><br><span class="line-number">29</span><br><span class="line-number">30</span><br><span class="line-number">31</span><br><span class="line-number">32</span><br><span class="line-number">33</span><br><span class="line-number">34</span><br><span class="line-number">35</span><br><span class="line-number">36</span><br><span class="line-number">37</span><br><span class="line-number">38</span><br><span class="line-number">39</span><br><span class="line-number">40</span><br><span class="line-number">41</span><br><span class="line-number">42</span><br><span class="line-number">43</span><br><span class="line-number">44</span><br><span class="line-number">45</span><br><span class="line-number">46</span><br><span class="line-number">47</span><br><span class="line-number">48</span><br><span class="line-number">49</span><br><span class="line-number">50</span><br><span class="line-number">51</span><br><span class="line-number">52</span><br><span class="line-number">53</span><br><span class="line-number">54</span><br><span class="line-number">55</span><br><span class="line-number">56</span><br><span class="line-number">57</span><br><span class="line-number">58</span><br><span class="line-number">59</span><br><span class="line-number">60</span><br><span class="line-number">61</span><br><span class="line-number">62</span><br><span class="line-number">63</span><br><span class="line-number">64</span><br><span class="line-number">65</span><br></div></div><h3 id="dom" tabindex="-1">DOM <a class="header-anchor" href="#dom" aria-hidden="true">#</a></h3><ul><li>document object model</li><li>节点 <ul><li>Html标签 比如:整个标签, doctype,html标签,head,body</li><li>非html标签 比如:换行符,注释</li></ul></li><li>DOM树</li><li>获取body标签 document.body</li><li>获取html标签 document.documentElement</li><li>获取title document.title</li><li>获取样式列表 document.styleSheets</li><li>任何标签都有这种属性 <ul><li>document.body.children 子元素(子标签)</li><li>document.body.childNodes 子节点</li></ul></li><li>父 <ul><li>parentNode 父节点</li><li>parentElement 父元素</li></ul></li><li>子 <ul><li>firstChild 子节点</li><li>firstElementChild 第一个子元素</li></ul></li><li>最后一个 <ul><li>lastchild 最后一个子节点</li><li>lastElementChild 最后一个子元素</li></ul></li><li>兄弟节点 <ul><li>nextSibling 下一个兄弟节点</li><li>nextElementSibling 下一个兄弟元素</li></ul></li><li>上一个 <ul><li>previousSibling 上一个兄弟节点</li><li>previousElementSibling 上一个兄弟元素</li></ul></li></ul></div></div></main><!--[--><!--]--><footer class="VPDocFooter" data-v-cfb513e0 data-v-21f75714><!----><div class="prev-next" data-v-21f75714><div class="pager" data-v-21f75714><a class="pager-link prev" href="/docs/frontend/qf/JS%E6%95%B0%E7%BB%84%E9%87%8D%E6%9E%842.html" data-v-21f75714><span class="desc" data-v-21f75714>Previous page</span><span class="title" data-v-21f75714>JS数组重构2</span></a></div><div class="has-prev pager" data-v-21f75714><a class="pager-link next" href="/docs/frontend/qf/JSDOM.html" data-v-21f75714><span class="desc" data-v-21f75714>Next page</span><span class="title" data-v-21f75714>JSDOM知识</span></a></div></div></footer><!--[--><!--]--></div></div></div></div></div><footer class="VPFooter has-sidebar" data-v-5211c0b1 data-v-9f24cc86><div class="container" data-v-9f24cc86><p class="message" data-v-9f24cc86>Released under the MIT License.</p><p class="copyright" data-v-9f24cc86>Copyright © 2019-present Evan You</p></div></footer><!--[--><!--]--></div></div>
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